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It is predicted that a comet will probably hit the earth in about 10 years and s

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It is predicted that a comet will probably hit the earth in about 10 years and scientists all over
the world are thinking about possible ways to ________it from happening. Which of the following
is not OK?   [     ]

A. protect    
B. stop    
C. keep    
D. prevent

试题答案

B

标签：inabouttheearthand

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